Type-writing machine



J. E. SIMPSON.

TYPE WRITING MACHINE.

APPLICATION FILED JAN. 4. 1919.

Patented Sept. 30, 1919.

INV TOR BY I W JAMES E. SIMPSON, 0F BROOKLYN, NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed January 4, 1919. Serial No. 269,623.

To all whom it may concern:

Be it known that I, JAMES E. SiMPsoN, a citizen of the United States, and resident of the borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention relates to inking and reinking means for the ribbons employed with typewriting and like machines, and my present improvements have particular reference to an easily attachable and detachable device, which can be applied quickly and conveniently to a machine by the user thereof, without requiring the services of a skilled mechanic for its application.

Further my improvements contemplate the provision of controlling means for the inking device whereby the same is actuated intermittently through the operation of the type bars, which in their printing strokes move an inking pad into contact with the ribbon to impart ink to the latter while said ribbon is movin under the influence of the ribbon feed mechanism; and, a still further feature of improvement consists in means for moving the inking pad into and out of its operative relation with the ribbon.

In the drawings Figure 1 is a front elevation of a portion of a type-writing machine to which my improvement is attached, and

Fig. 2 is a top plan view of the same.

In the figures only such portions of a typewriting machine are shown as will serve to explain the relation of my inking device therewith. Thus let 1 indicate a platen, 2 the guide jaws for centering the types on the type bars to the printing position, 3 a type bar bearing a type 1 and 5 a ribbon spool casing mounted on bracket 6 and hav ing the pivot 7 to carry a ribbon spool (not shown).

The inking device has a base plate 9, provided at one end with lugs 10, to fit over the vertical wall of casing 5, for support, and said plate 9 is shaped at its other end, as 11, to fit against the under surface of a guide jaw 2; while a loose piece 12, held to plate 9 by a thumb screw 13, is adapted to be clamped down tightly upon the upper surface of jaw 2 to bind the latter securely between said piece 12 and plate 9. In this manner the device may be removably at tached to a typewriting machine.

While the attaching means shown are such as particularly suit an Underwood machine, they may obviously be modified, while of the same general character, to serve for other makes of typcwriting machines.

Mounted on the base 9 by pivot 14, is an arm 15, which carries a pin 16 that serves as a pivotal bearing for an inking pad or roller 17, a cap 18 being screwed upon the pin 16 to hold the inking roller in place. The arm 15 is held outwardly against a stop 19 by a spring 20, that presses from the opposite side of said arm against a projection 21 thereon. The arm 15 is so positioned that its free end lies in the path of the types as they are carried by the type arms toward the printing point, thereby in the successive strokes of the type bars setting up a vibratory action for the inking pad.

The ink ribbon 22, which is supported in the usual manner over the printing point of the platen, is passed around a pin 23 and thence over the surface of a roller 24 in its path of travel to the ribbon spool 25. Said roller 24 is eccentrically mounted by a bushing 26 on a pivot 27, a lever 28 engaging with said bushing to rock said roller, whose range of movement is limited b the lever 28 engaging in opposite directions, with the pin 23 and a pin 29. The pad 17 and roller 24 are so relatively located that, with the pad 17 in its normal position and the roller 24 rocked until its lever 28 is engaged with the pin 23, then the pad 17 on its vibratory movement will make intermittent contact with the ribbon passing around said roller 24; but when the roller 24 has been rocked in the opposite direction, so that the lever 28 is brought into contact with pin 29, then the roller 24 has thereby been spaced apart from pad 17 beyond the zone of vibratory activity of said pad, so that the ribbon then feeds over roller 24 without receiving further accessions of ink from pad 17.

It will be understood from the foregoing description of parts and their operative an inoperative relations, that the inking pad will be brought into intermittent contact with the ribbon in the feed movement of the latter, through the operation of the types, when the roller 24 is rocked in one posit on. Also, that when said' roller is rocked into the other position, then the inking operation will be suspended. I have found it desirable. to discontinue the inking operatlon when a worn ribbon has been revivified, to

avoid imparting an excess of ink to the rib bon, until said ribbon again needs a further provement is'equally applicable for the purposes of re-inking a used ribbon or for supplying ink to a plain ribbon.

Or the pad may merely carry moisture to brighten up a dry ink ribbon.

Variations maybe resorted to Within the spirit and scope of my said invention and parts thereof used without others.

1. The combination, with a typewriting machine having type bars and an inking ribbon, of revivifying means for said ribbon, and means located in the path of said type bars to be actuated thereby for intermittently applying said revivifying means with the operation of said type bars.

2. The combination, with a typewriting machine having type bars and an inking ribbon, of revivifying means for said ribbon,

means located in the path of said type barsto be actuated thereby for intermittently applying said revivifying means With the operation of said type bars, and means for rendering said revivifying means inactive.

3. The combination, with a typewriting machine having type bars and an inking ribbon, of a device removably attachable to said machlne and comprlsing means for revivifying said ribbon, and means located in the path of said type bars to be actuated thereby for intermittently applying said revivifys 1iong means with the operation of said type ars.

4:. The combination, with a typewriting machine having type bars and an inking ribbon, of a device removably attachable to said machine and comprising means for revivifying said ribbon, means located in the path of said type bars to be actuated thereb for intermittently applying said revivi ying means with the operation of said type bars, and means for rendering said revivifying means inactive.

5. The combination, with a typewriting machine, having an inking ribbon, of a mem ber removably attachable to said machine,

an inking pad, a vibratory arm mounted on said member, said arm carrying said pad, and said arm located in the path of the type bars to be intermittently actuated-thereby, a return spring for said arm, a guide roller for said ribbon, and means for moving said roller into and out of the zone of vibratory activity of said pad.

Signed at Brooklyn, in the county of Kings and State of New York, this 20th day of December, A. D. 1918.

JAMES E. SIMPSON.

Witnesses:

- J. KENNY,

J. U. LAMOREAUX. 

